feat: ✨ 前端：玩家服务平台和运营管理系统后台初始化及框架搭建，后端：完成基础功能搭建。

backend/src/config/database.config.ts

@@ -0,0 +1,22 @@
+import { DataSource, DataSourceOptions } from 'typeorm';
+import { config } from 'dotenv';
+
+config();
+
+export const dataSourceOptions: DataSourceOptions = {
+  type: 'mysql',
+  host: process.env.DB_HOST || 'localhost',
+  port: parseInt(process.env.DB_PORT || '3306', 10),
+  username: process.env.DB_USERNAME || 'root',
+  password: process.env.DB_PASSWORD || '',
+  database: process.env.DB_DATABASE || 'jge_rs_sl_web',
+  entities: ['dist/**/*.entity{.ts,.js}'],
+  migrations: ['dist/migrations/*{.ts,.js}'],
+  synchronize: process.env.NODE_ENV === 'development',
+  logging: process.env.NODE_ENV === 'development',
+  charset: 'utf8mb4',
+};
+
+const dataSource = new DataSource(dataSourceOptions);
+
+export default dataSource;